The Department of Justice announced Tuesday that a grand jury indicted the Southern Poverty Law Center for making fraudulent payments of millions of dollars to members of the Ku Klux Klan and other neo-Nazi organizations. One leader of the 2017 Unite the Right protest in Charlottesville, Va., received roughly $270,000 over an eight-year period. Others had affiliations with the Ku Klux Klan, United Klans of America, Aryan Nations, the Nationalist Socialist Party of American Nazis and the Sadistic Souls Motorcycle Club. Several of the informants were also being paid while simultaneously being featured in SPLC publications — including on its...